Gmelin Handbook of Inorganic and Organometallic Chemistry

The volume closes the gap that exists within the "C" series on polynuclear compounds. It describes the trinuclear organoiron compounds containing only ligands of the 1L type, i.e., those carbon ligands bonded to iron through one carbon atom per ligand such as terminal and bridging carbonyls, isocyanides, and various triply bridging carbon groups. Other trinuclear compounds with nL ligands of higher order (n = 2 or more) have already been treated in Organoiron Compounds C7, 1985. Volume C 6b describes Fe3(CO)n compounds in which n = 10 and 11. The great variety of cluster types originates in (a) the existence of noncarbon ligands with Group 16 to 13 elements acting as iron-bridging atoms, (b) many hydrogen-bridged clusters and their corresponding deprotonated anions, and (c) numerous derivatives with donor ligands (2D) replacing terminal carbonyl groups. In addition, there are compounds containing other transition metals (M) in an Fe3Mx skeleton. The ÄHFe3(CO)11Ü - and ÄFe3(CO)11Ü 2- anions, their properties and derivatives are described in detail as they play an important role in many preparations and reactions of trinuclear iron carbonyl complexes. Many of the typical cluster structures, determined by X-ray diffraction analyses, are illustrated. This present volume contains an Empirical Formula Index and Ligand Formula Index for all of the compounds in volumes C 6a and C 6b.